標題: Hierarchical tensor approximation of multidimensional visual data
作者: Wu, Qing
Xia, Tian
Chen, Chun
Lin, Hsueh-Yi Sean
Wang, Hongcheng
Yu, Yizhou
資訊工程學系
Department of Computer Science
關鍵字: multilinear models;multidimensional image compression;hierarchical transformation;tensor ensemble approximation;progressive transmission;texture synthesis
公開日期: 1-一月-2008
摘要: Visual data comprise of multiscale and inhomogeneous signals. In this paper, we exploit these characteristics and develop a compact data representation technique based on a hierarchical tensor-based transformation. In this technique, an original multidimensional data set is transformed into a hierarchy of signals to expose its multiscale structures. The signal at each level of the hierarchy is further divided into a number of smaller tensors to expose its spatially inhomogeneous structures. These smaller tensors are further transformed and pruned using a tensor approximation technique. Our hierarchical tensor approximation supports progressive transmission and partial decompression. Experimental results indicate that our technique can achieve higher compression ratios and quality than previous methods, including wavelet transforms, wavelet packet transforms, and single-level tensor approximation. We have successfully applied our technique to multiple tasks involving multidimensional visual data, including medical and scientific data visualization, data-driven rendering, and texture synthesis.
URI: http://dx.doi.org/10.1109/TVCG.2007.70406
http://hdl.handle.net/11536/9917
ISSN: 1077-2626
DOI: 10.1109/TVCG.2007.70406
期刊: IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS
Volume: 14
Issue: 1
起始頁: 186
結束頁: 199
顯示於類別:期刊論文


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